Greenhouse amplification: gases may have hidden kickhttp://apocadocs.com/s.pl?1286203159Emissions of methane and nitrous oxide (N2O) will cause temperature rises one-fifth higher than previously believed, because of the effects of carbon-climate feedbacks. So say researchers from Canada who have carried out a modelling study.
"The mechanism is that emission of other greenhouse gases leads to warming, which in turn leads to emissions of carbon dioxide from soil and from the ocean," Nathan Gillett of Environment Canada told environmentalresearchweb. "This additional carbon dioxide leads to additional warming, thereby amplifying the effect of the non-carbon-dioxide greenhouse gases over and above the warming that would have occurred without this carbon-cycle feedback."... Greenhouse gases other than carbon dioxide are estimated to have caused about 37 percent of the total greenhouse-gas forcing. And mitigation strategies that include a range of gases are likely to be 30-40 percent cheaper than those focusing on carbon dioxide alone.